until that time, she should shut up. >> yikes. well, the governor's reaction may have seemed a bit harsh, especially when he admits his weight is a serious issue. >> if you talk to anybody in this room who has struggled with their weight, what they will tell you is, that every week, every month, every year, there's a plan. and i'm making the best effort i can. and sometimes i'm successful. and other times i'm not. >> let's bring in psychologist and behavior expert wendy walsh. so wendy, governor christie, he says there is always a plan. but what do you make of that, after he pokes fun at himself, chowing down on the doughnut on the letterman show? >> well, he's, of course, got to save face. i mean, he has to deal with this kind of public shame every single day. and anybody who struggles with their weight, it is not easy. you know if you have any other kind of disorder, whether it's gambling or sex addiction or drug addiction, you can find ways to hide it. but if you have an eating issue, you have to walk that walk of shame every day.